Variables global to a program

[Michael de Estrada]

(12-22-2013 04:43 AM)Han Wrote:  

Code:


MYVAR;

EXPORT TEST()
BEGIN
  MYVAR:=MYVAR+1;
END;

Run TEST() a few times.

Wow ! So, if you fail to explicitly initialize variables that are used as counters you will get unpredictable results. Also, I created a second program TEST1() in a separate program group with MYVAR; and it started at 1 and is not in sync with the MYVAR in TEST(). So, the variable name is not unique, and values are being stored at different locations. This is crazy.

Also, if I change the variable name to say MYVAR1, it resets to zero and increments again. Just for yucks, I did a soft reset (On Symb), but it did not reset these values. I've never encountered any programming languages that worked like this, and am having a hard time understanding the purpose if any.